When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
IMHO the 6.4 has proven it's self quite well in the last several years, its a very nice engine with a lot of potential, I actually think that the 6.4 broke that barrier before the 6.0
I know I'd actually like to have a 6.4, maybe after I graduate. 585hp with just tune, intake, and exhaust?